Jack



oct. 26 ,1926. 1,604,715

J. H. L. PATTERSON -JACK Filed Oct. 22 1925 2 Sheets-Sheet l M2 or: M zzz/if Ufronieys,

J. H. L. PATTERSON Oct. 26 1926.

JACK

Filed Oct. 22, 1925 1 z sheets-Sheet 2 Patented Get. 2.6, 192th JOI-IN HENRY LEGGE PATTERSON, OF TRONTO, ONTARIO, CANADA.

JACK.

Application filed. October 22, 1925.

liy invention, relating to a jack which can be attached to an automobile wheel and while attached will permitof the removal of the tire, comprises; a ram extensibly adj ustable for engagement with the wheel. hub, a base n'iember having` at one end' ground engaging means, at the other end a head i'orn'ied with an open sided socket for the ram axial lio the length of the base member and which will enter between the brake drum and the felloe and bring the extensible ram in its contracted position into contact or nearly so with the wheel hub, and felloe engaging means interjacent the ground engaging meansand head providing a wide engagement or bearing with the felloefat one side of the wheel; and is characterized by an adjustable clamp, engaging the felloe at the other side of the wheel, co` operating with the. felloe engaging means for securing the jack to the wheel and completing the socket for the ram and the e5:- ten'sible adjustment of' the ram to the wheel hub.

For an understanding of the invention reference is to be had to the following de scription and to the accompanying draw ings in which Fig. l, is a side elevation ofl the ack showing in dotted lines its attachment to an automobile wheel;

Fig. 2, is a vertical elevation at right angles to Fig. l, showing the method of use;

Fig. 3, is a fragmentary perspective view, showing the jack head and the clamping means;

Fig. 4, head;

Fig. 5, is a side elevation of the clamping means; y j

Fig. 5at isa perspective view of the clamping meanslooking fromLthe opposite side to Fig; 3;

Fig. 6, is a perspective view of the ram Fig. 7, is a fragmentary perspective view of a modification of the parts shown in Fig. 2;

` Fig. 8, is a perspective view of a modification of the clamping means shown `in Figs. 3, 4, and 5; and

Fig. 9, is a modification of the ram shown in Fig. 6.

Like characters of reference referto like is a lperspective view ofthe jack Vformed with a rabbet Serial No. 64,150.

parts throughout the drawings.

The base member of the jack is adapted to be placed against the inner tace of the wheel and comprises an arm l of a conformation corresponding to the curvature of' the inflated tire. The upper end of this arm is of relatively considerable width or breadth and the top of its inner-surface is 2 which has a wide bearing or engagement with the adjacent side and the inner perimeter of the felloe 3. At the lower end of the arm l is a ground specificati on and engaging member 4 which may convenient-V ly takethe form of a per end of the arm l is slightly less than the distance between the felloe and the hub 7. The head, transversely ol the. wheel, is relatively thin to enter between the felloe and brake drum and, in

plate, and at the upa head 40 of a height the preferred construction, consists of three perpendicular sides 8, 9 and l0 respectively. The sides 9 and l0 extend laterally from the side 8, and the three sides form a socket extending axially of the length of the base member, the fourth side of which is open. As shown in Figs. l to 4 inclusive, the. edges of the sides 9 and l() are inclined outward ly-upwardly from the bottom of' the sides for a distance vapproximately two thirds the height of the head and then perpendicularly for the remainder of' the height. In the sides 9 and lO'at the junction of the inclined and perpendicular are hinge sockets ll.' The inner surface-s of the sides 9 and l0 areformed with serrations 13, and the serrations of the side' 9 are staggered withrelationto the serrations of the side 10, so that there will be a. .difierence in'height'between the serrations on the two sides equal to one half their pitch. ln

the case of automobile wheels equipped with balloon tires, and in the case of automobile wheels with short spokes, there is very little space for the entry of the head between the brakedrum and the felloe, and to meet conditions of this kind is one of the purposes of my present invention which is accomplished by constructing the jack with a relatively long thinhead that can be introduced between the felloe and the brake drum. As a relatively thin head will not provide a socket for the reception` of a ram parts of the edges of suiicient strength to carry the load imposed by the supported vehicle, l have provided a removable part, adjustably connected to the head, to complete the socket for the ram. This part, hereinafter for conveniencetermed a clamp, consists oft a plate 14 which, when the jack is assembled, is op- ,pcsed to the side 8, and this plate has lateral projections or wings 15 the edges oi which are opposed to the edges -of the sides 9 and 10. As shown in Figs. 3 to 5a inclusive, the wings 15 are formed with hinge members 16 corresponding to and entered in the Vsockets 1-1., and the inner face of the plate ist is formed with an inclined surface i7 at the lower end of which is an outwardly inclined clamping member 19 for engaging the Yielloe at the outer side of the wheel. Extending vthrough the plate 14 is a clamping bolt 2O the inner end o't' which engages in a screw-threaded hole 21 in the side 8. Tn order lthat 4'the clamping member 19 may apply maxin'ium pressure on the felloe 5 vthe bolt 2O is entered ythrough the plate let at or near its lower extremity. This bolt when tightened forces the clamping member 19 against'the 'le'lloe, and the latter then moves the head 1 0 in a radial direction ytowards the hub. This movement of the head intensiiies the pressure exerted by the ram against the hub and the rabbeted surface 2 against the inner side of the felloe.

The felloe engaging surface of the clamping member 19 is undulating, with a central concave-'convex part 22, and two convex parts 23 and 2d between the concave-convex part 22 and the'edges of the clamping member. These conveX Aparts 23 and 24 form two bearings for engaging the telloe without marring vit when clamping pressure is applied` The rabbet is likewise formed with two curved bearings 50, -for engaging the felloe and these in conjunction with the curved parts v23 and 24 provide four distinct contacts vfor the jack with the wheel. The rain comprises a shank 26, corresponding in cross section to the Vbore of the head 40. As

\ shown in the 4drawings this shank 26, is

substantially rectangular in cross section and its sides 27 and 28 which are in contact with the sides 9 and 10 of the head L10, have serrations Vfor engagement with the serrations 13.V The serrations of the vside 27 are staggered with relation to the serrations of the side'28 so that the initial adjustment of the ram to 4the wheel hub can be effected within a distance of one half the pitch of the serrations, which adjustmentr is completed by the tightening of the clamping bolt 20. This tightening of the clamping bolt 20 ycauses the inclined member 19 yt0 bear upon Vthe 4ielloe with suicient pressure to 'force theentire liack radially toward the wheel hub. f he 'inclination of the edges of the sides 9 and 10, when the hinge mem- Lemar/1,5'

bers 16 are entered in the hinge sockets 11, permit ot' the rocking or swinging movement of the clamp relatively to the head during the tightening or slackening of the clamping bolt.

ln Figs. 7 and 8, the head is shown to be much thinner than that shown in Figs. l to 5 inclusive, and the inner-surface of the side 8 is formed with serrations 41. The inner surface of the plate 1/1 is formed with similar serrations Ll2, staggered with relation to the serrations L11. The ram shown in l? ig. 9 comprises a shank, rectangular in cross section, the sides of which are serrated, with, the serrations 43 at one side staggered with respect to the serrations at the other side, so that the ram can 'ne adjusted to the wheel hub within a distance or one half the pitch of the serrations, and the adjustment can be completed by tightening the clamping bolt against the clamp and the latter against the shank of the ram.

Tn the use or' the jack, the base member is attached to the wheel by introducing the head between the elloe and the brake drum until the rabbet 2 comes into position to overlap the inner perimeter, and engage the inner side, of the elloe. In this position the curved arm of the base member is op posed to the inflated tire and the ground engaging means extends transversely to it. when the base member is properly positioned with respect to the wheel, the ram is entered in the socket of the head and the clamp is placed against the outer side of the ram and secured to the head by the clamping bolt. This maintains the assembly of the ram and base member, and the clamping bolt when tightened forces the inclined member 19 against the elloe at the outer side of the wheel, and draws the rabbet 2 of the base member tightly against t-he inner side. The continued tightening of the bolt causes the inclined member 19 to move the entire jack radially in the direction of the hub and torce the ram tightly against it. T the rain is primarily adjusted to the wheel hub, within a distance of one halt the pitch o'i the serrations, a slight tightening of the clamping bolt will complete the adjustment and secure the jack to the itelloe. The jack is usually attached to the wheel at some convenient position between the ground and the horizontal diameter of the wheel, and the wheel when rotated brings the jack to a perpendicular position, which is a positionparallel 'to the vertical axis of the wheel. When the ack comes to this position, the ground engaging member or plate t'orms a substantial contact with the surface upon which vthe jack is seated and the basemember raises the wheel from the ground a `distance corresponding to the space or interval between che inflated tire and the ground engaging member.

Having thus fully described my inventionV what I claim is new and desire to secure by Letters Patent is l. A jack adapted to be secured to a wheel comprising a base member having ground engaging means at one end, a ram socket at the other end and felloe engaging means at one side of the base member interjacent the socket andthe ground engaging means, in combination with an arm eXtensible in the socket, clamping meansV at the opposite side of the base member to the felloe engaging means, and means for adjustably connecting the clamping means to the base member for cooperating with the felloe engaging means in securing the jack to the wheel.

2. A jack comprising a base member, having ground engaging means at one end,y an open sidedV socket for the ram atthe other end, axial to the length of the base member, and elloe engaging means interjacent the socket and ground engaging means for contact with one side of the felloe, in combination with a ram entered in the socket and extensibly adjustable for engagement with the wheel hub, and clamping means at the opposite side coacting with the elloe engaging means for securing the jack to the wheel, said clamping means completing the socket for the ram.

3. A jack adapted to be secured tov a wheel comprising a base member formed to allow of the removal of the tire while the jack is attached to the wheel, said base member having gro-und engaging means at one end, an open sided socket for the ram at the other end, and felloe engaging means between the socket and the ground engaging means for Contact with the felloe at one side of the wheel, in combination wit-h a ram eXtensible in the socket, means to complete the socket, a clamping member for engaging the elloe at the other side of the wheel, and means `for tightening the clamping member against the felloe.

4. A jack, adapted to be secured to a wheel, comprising a base member formed to allow the removal of the tire while the jack is attached to the wheel, said base member' having ground engaging means at one end, an open sided socket for the ram at the other end, and elloe engaging means between the socket and the ground engaging means for contact with the felloe at one side of the wheel, in combination with a ram extensible in the socket, clamping means having a hinge connection with the socket, and means for tightening the clamping means to secure the jack to the wheel and complete the extensible adjustment of the ram.

5. A jack, adapted to be secured to a wheel, comprising a base member formed to allow the tire to be removed while the jack is attached to the wheel, said base member having ground engaging means at one end, a socket at the other end, and ielloe engaging means between the socket and the ground engaging means for contact with the felloe at one side of the wheel, in combination with a ram extensible in the socket, clamping means cooperating with the felloe engaging means, having its inner surface inclined and having an inclined member at its lower end, engaging the felloe, securing the jack to the wheel and completing the extensible adjustment of the ram to the wheel hub.

6. A jack, adapted to be secured to a wheel, comprising a base member formed to allow the tire to be removed while the jack is attached to the wheel, said base member having ground engaging means at one end, a socket for the ram at the other end, and felloe engaging means between the socket and the groundengaging means for contact with the felloe at one side of the wheel, in combination with a ram extensible in the socket and clamping means for eifecting the adjustment of the ram to the hub and cooperating with the felloe engaging means for securing the jack to the wheel, said clamping means, having a member with curved surfaces for contact with the felloe.

Signed at the said city of Toronto this` twenty-fifth day of September, A. D. 1925. V JOHN rHENRY LEGGE PATTERSON. 

